Premium
Anatase‐to‐Rutile Transformation in Titania Powders
Author(s) -
Gouma Pelagia I.,
Mills Michael J.
Publication year - 2001
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.2001.tb00709.x
Subject(s) - rutile , anatase , materials science , ceramic , chemical engineering , transmission electron microscopy , mineralogy , metallurgy , nanotechnology , catalysis , photocatalysis , chemistry , biochemistry , engineering
Titania (TiO 2 ) is an important electronic ceramic material for use in diverse applications such as gas sensors, catalysts, dielectrics, and ceramic membranes. TiO 2 exists as several polymorphic phases, most commonly as rutile or anatase. This paper investigates the microstructural evolution of anatase‐based commercial TiO 2 powders, with an average size of 100 nm, at high temperatures. These powders transform to the rutile structure at 1000°C. The characteristics of the anatase‐to‐rutile transformation have been studied using transmission electron microscopy analysis, and new information regarding the nature and mechanisms of this polymorphic reaction has been revealed.